Any wired soundbar and speakers should work. I don't know if all Roku TVs are the same since they're made by several manufacturers (now including Roku), but my TCL Roku TV has an eARC HDMI port and optical output (I believe - not positive about the optical out). Note that the only wireless speakers that are supported are Roku speakers. The problem is usually the other way around (i.e., trying to use Roku audio products with non-Roku TVs).
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